CVE-2017-5415
An attack can use a blob URL and script to spoof an arbitrary addressbar URL prefaced by "blob:" as the protocol, leading to user confusion and further spoofing attacks.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 12.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
An attack can use a blob URL and script to spoof an arbitrary addressbar URL prefaced by "blob:" as the protocol, leading to user confusion and further spoofing attacks. This vulnerability affects Firefox < 52.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 12.34% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · first 14 April 2017
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
EPSS 12.3% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/96692Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1321719Exploit, Issue Tracking, Patch
- https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
- http://www.securityfocus.com/bid/96692Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1321719Exploit, Issue Tracking, Patch
- https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.